CN102110895A - Sub-control box for active surface control system of large-scale radio telescope - Google Patents
Sub-control box for active surface control system of large-scale radio telescope Download PDFInfo
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- CN102110895A CN102110895A CN2011100717580A CN201110071758A CN102110895A CN 102110895 A CN102110895 A CN 102110895A CN 2011100717580 A CN2011100717580 A CN 2011100717580A CN 201110071758 A CN201110071758 A CN 201110071758A CN 102110895 A CN102110895 A CN 102110895A
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Abstract
The invention discloses a sub-control box for an active surface control system of a large-scale radio telescope in the technical field of electromechanical control, which comprises a shell, and a three-phase external alternating-current (AC) interface, an external Ethernet interface, an external direct-current (DC) output interface, an external recommend standard-485 (RS-485) bus interface, three groups of switching power supplies, a serial server, a single-phase AC electro-magnetic interference (EMI) filter, a DC EMI filter and a DC power supply which are fixed in the shell. The sub-control box for the active surface control system of the large-scale radio telescope has excellent electromagnetic compatibility, reliable and stable performance and long designed life, can monitor a working state in real time, and is suitable for operation in a severe outdoor environment.
Description
Technical field
The present invention relates to a kind of device of Electromechanical Control technical field, specifically is a kind of sub-control box that is used for large-scale radio telescope active surface control system.
Background technology
The diameter of large-scale radio telescope in this case, owing to gravity, Temperature Influence make structure generation strain, is accepted decrease in efficiency generally more than 50 meters.The active surface control system is exactly that the compensation distortion is to obtain the device of higher precision with a series of step motor drive reflecting surface motions.In this system, power supply also will be as the communication relaying of stepping motor and host computer except finishing transformation, AC-DC conversion function, and need consider Electro Magnetic Compatibility, antisurge performance etc., the operating state of monitoring power supply in real time.In addition, since large-scale radio telescope be in the open air, work under the high altitude environment, so system also will have characteristics such as waterproof and dustproof concurrently with power supply.
Electro Magnetic Compatibility EMC (Electromagnetic Compatibility) is meant that the operation that meets the requirements of equipment or system does not produce the ability of intolerable electromagnetic interference to any equipment in its environment in its electromagnetic environment.Therefore, EMC comprises the requirement of two aspects: the equipment that is meant on the one hand can not surpass certain limit value to the electromagnetic interference that the place environment produces in normal course of operation; The equipment that is meant on the other hand has to a certain degree immunity to interference, i.e. electromagnetic susceptibility to the electromagnetic interference that exists in the environment of place.IEC IEC to the definition of electromagnetic compatibility is: system or equipment is the energy operate as normal in residing electromagnetic environment, other system and equipment is not caused interference simultaneously.Large-scale radio telescope is had relatively high expectations for Electro Magnetic Compatibility, otherwise can make the active surface Adjustment System lose more than gain.The measure that improves the power supply Electro Magnetic Compatibility has: electric cabinet metal part connects by the maximum possible surface area, and signal cable and power cable separately lay, and electromagnetic interface filter etc. is used in the unshielded cable hinge joint in same circuit.
Surge also is surging, as the term suggests be exactly the transient overvoltage that exceeds normal working voltage.Say that in essence surge is a kind of violent pulse that occurs in the only millions of/one second time.The reason that may cause surge has: jumbo, short circuit, power supply switch or big-block engine.For large-scale radio telescope, because it is highly higher, thunderstruck possibility is bigger, must consider the performance of anti-thunderbolt.
Find that through the retrieval to prior art Chinese patent literature CN101650584A discloses a kind of " cabinet with sealing mechanism ", the core of this technology is to increase by a circle seal groove at case lid and casing joint portion, and sealing ring is installed in seal groove.The material of sealing ring is made up of conductive rubber and General Purpose Rubber, wherein internal layer is a General Purpose Rubber, and skin is a conductive rubber, can make case lid and casing form a complete shielding case like this, and have certain water-proof function, improved the Electro Magnetic Compatibility of system effectively.But above-mentioned technology has certain deficiency in actual applications: because conductive rubber is aging easily, in use for some time, outer field conductive rubber cracking, following the string causes casing to lose sealing, and then causes into fault such as water.In addition, because a circle encapsulant has only been used in this invention, the rigidity of conductive rubber is bigger, makes the sealing circle lose efficacy because of mismachining tolerance easily.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of sub-control box that is used for large-scale radio telescope active surface control system is provided, Electro Magnetic Compatibility is good, dependable performance is stable, designed life is long, can monitor operating state in real time, is suitable for working under the adverse circumstances in the open air.
The present invention is achieved by the following technical solutions, the present invention includes: shell and be fixed in its inner three-phase external communication electrical interface successively, the external ethernet interface, outside direct current output interface, outside RS-485 bus interface, three groups of Switching Power Supplies, serial server, the single phase alternating current (A.C.) electromagnetic interface filter, direct current electromagnetic interface filter and DC power supply, wherein: the input of single phase alternating current (A.C.) electromagnetic interface filter is connected with three-phase external communication electrical interface, the output of single phase alternating current (A.C.) electromagnetic interface filter is in parallel with the input of three groups of Switching Power Supplies respectively, link to each other with the input of the input of direct current electromagnetic interface filter and DC power supply respectively after the output parallel connection of three groups of Switching Power Supplies and export the 50V direct current, the output of direct current electromagnetic interface filter links to each other with outside direct current output interface respectively, the output of DC power supply links to each other with serial server and exports the direct current of 24V, the ethernet port of serial server links to each other with external ethernet interface and outside RS-485 bus interface respectively with bus end, the signal end of serial server is provided with signal processing and modular converter, and this signal processing links to each other with the signal end of serial server respectively with the input of modular converter and receives command signal from Ethernet.
Be connected in series diode on the output of described three groups of Switching Power Supplies respectively with the Control current direction, prevent that electric current from pouring in down a chimney;
Be respectively equipped with DC current sensor that output and described signal processing link to each other with modular converter output current signal on the output of described three groups of Switching Power Supplies with the sense switch power supply.
Be respectively equipped with three groups of thermocouples that output and described signal processing link to each other with modular converter skin temperature signal on the shell of described three groups of Switching Power Supplies with the sense switch power supply.
Described signal processing and modular converter are according to the query statement signal, output current signal and the skin temperature signal that receive, the latter two are converted to the digital signal of using the ASCII coding from voltage signal, and send to described serial server by connection.
The input of described single phase alternating current (A.C.) electromagnetic interface filter is provided with respectively and described three groups of Surge Protectors that Switching Power Supply links to each other.
By increasing the anti-aging rubber sealing ring, the present invention has significantly improved fire resistance characteristic and life-span, reach the degree of protection of IP-65, in life test, sub-control box bore 40 ℃ to 50 ℃ high temperature, sunlight direct projection and frequent rainfall in the open air for 60 days, still the fault of intaking appears in operate as normal.Require according to GJB151A-97 military equipment and subsystem electromagnetic emission and susceptibility, in the emc testing that GJB152A-97 military equipment and subsystem electromagnetic emission and susceptibility measurement are carried out, owing on Switching Power Supply input and output circuit, all added electromagnetic interface filter, and case lid is linked to each other to have constituted by conductive rubber with casing and contacts good complete conductor, so, compare with the product of said function, the power line conduction emission of this sub-control box is reduced to 90dB/100kHz, 225dB/500kHz by 115dB/100kHz, 65dB/500kHz; The electric field radiation emission is reduced to 32.5dB/2GHz, 41.3dB/500MHz by 40dB/2GHz, 47.5dB/500MHz, and tangible change has been arranged.In the immunity experiment that carries out according to GB/T 17626.4-2008 electrical fast transient (eft) immunity experiment, GB/T 19626.5-2008 surge (impact) immunity experiment; owing to used Surge Protector; and ground connection is good; sub-control box is 80 exchanging the input interface quantity that superposeed; amplitude is 4kV; duration is after the impulse train of 100ns, operate as normal still, and no damage occurred for its inner components and parts.
Description of drawings
Fig. 1 is the local enlarged diagram after case lid of the present invention and casing close up.
Fig. 2 is the schematic diagram of supply module of the present invention.
Fig. 3 is a communication part schematic diagram of the present invention.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Present embodiment comprises: shell and be fixed in inner three-phase external communication electricity input interface ACIN successively and (live wire L arranged wherein; zero line N, ground wire PE); external ethernet interface EL1; EL2; outside direct current output interface L1; L2; L3; L4; L5; L6; outside RS-485 bus interface FL1; FL2; FL3; FL4; FL5; FL6; Switching Power Supply S1; S2; S3; diode D1; D2; D3; serial server COMS1; COMS2; Surge Protector SPD; single phase alternating current (A.C.) electromagnetic interface filter ACEMI; direct current electromagnetic interface filter DCEMI; overcurrent protection switch DS; DC current sensor CSR1; CSR2; CSR3; thermocouple TSR1; TSR2; TSR3; signal processing and modular converter DAQ and DC power supply S4.
As shown in Figure 1, described shell comprises: casing 5 and case lid 2, wherein: the junction of the junction of the upper edge of described casing 5 and case lid 2 and case lid 2 lower edges and casing 5 is equipped with seal groove.
It is wide that described seal groove is of a size of 6-15mm, and 5-10mm is dark, places conductive rubber 4 or anti-aging rubber 3 in the groove.By inside and outside two-layer sealing ring, the useful life that can improve shell.Outer field conductive rubber 4 plays UNICOM's casing and case lid becomes a conductor and certain waterproof effect, and the anti-aging rubber 3 of internal layer mainly plays the effect of water proof and dust proof, can use than the long time and can not wear out.
Described casing 5 is provided with the right bulge-structure of described rubber phase and improves sealing effectiveness to cooperate, and the thickness of this bulge-structure is 1mm, highly is 10mm.
Described inner components and parts connect with Fig. 2, mode shown in Figure 3.The input of single phase alternating current (A.C.) electromagnetic interface filter ACEMI is connected with three-phase external communication electricity input interface ACIN, the output of single phase alternating current (A.C.) electromagnetic interface filter ACEMI respectively with three groups of Switching Power Supply S1, s2, the input of S3 is in parallel, three groups of Switching Power Supply S1, s2, link to each other with the input of the input of direct current electromagnetic interface filter DCEMI and DC power supply S4 respectively after the output parallel connection of S3 and export the 50V direct current, the output of direct current electromagnetic interface filter DCEMI links to each other with outside direct current output interface L1-L6 respectively, the output of DC power supply S4 and two serial server COMS1, COMS2 links to each other, the COMS1 of serial server, the ethernet port of COMS2 and bus interface respectively with external ethernet interface EL1, EL2 and outside RS-485 bus interface FL1-FL6 link to each other, the signal end of serial server COMS1 is provided with signal processing and modular converter DAQ, and this signal processing links to each other with the signal end of serial server COMS1 respectively with the input of modular converter DAQ and receives command signal from Ethernet.
The input voltage 220VAC of described Switching Power Supply S1, S2, S3, output: 50V DC * 25A, power are 1200W, three Switching Power Supply parallel runnings also form redundant.Be connected in series diode D1, D2, D3 respectively with the Control current direction on the output of three groups of Switching Power Supply S1, S2, S3, electric current pours in down a chimney when preventing do not have output voltage a Switching Power Supply fault.
Be respectively equipped with DC current sensor CSR1, CSR2 that output and described signal processing link to each other with modular converter DAQ, CSR3 output current signal on the output of described three groups of Switching Power Supply S1, S2, S3 with the sense switch power supply.
Be respectively equipped with three groups of thermocouple TSR1, TSR2 that output and described signal processing link to each other with modular converter DAQ, TSR3 skin temperature signal on the shell of described three groups of Switching Power Supply S1, S2, S3 with the sense switch power supply.
The output parallel connection of described diode group D1, D2, D3, rated current 25A, puncture voltage 1000V.
Described DC power supply S4 is used for to serial server COMS1, COMS2 and signal processing and modular converter DAQ power supply, and the input voltage of DC power supply S4 is 50V, and output voltage is 24V.
Described serial server COMS1, COMS2 have Ethernet interface and two kinds of interfaces of RS-485 bus interface, serial server COMS1, COMS2 can transmit the signal that receives from Ethernet interface EL1, EL2 by RS-485 bus interface FL1-FL6, perhaps will transmit by Ethernet interface EL1, EL2, play the effect of relay station and conversion of signals from the signal that RS-485 bus interface FL1-FL6 receives.Serial server COMS1, COMS2 can be between-10 ℃ to 70 ℃ operate as normal.Wherein the RS-485 bus interface can be that 4 line duplexs also can be 2 line half-duplex mode of operations, and baud rate is 9600 or 115200.
Described Surge Protector SPD can be so that sub-control box has the ability of certain antisurge (impact); Surge Protector SPD discharge parameter is 40kA; be the single phasing protection device; maximum working voltage is 276V; the voltage protection level is 830V; be applicable to the operational environment of 50Hz 220V, the response time is less than 1ns.
Described single phase alternating current (A.C.) electromagnetic interface filter ACEMI and direct current electromagnetic interface filter DCEMI use the effect that can play rectification, filtering, improve Electro Magnetic Compatibility simultaneously, and its rated current is 30A, rated voltage 220V.
The rated current 80A of described direct current electromagnetic interface filter DCEMI, rated voltage 50V.
Described overcurrent protection switch DS can be in system overload open circuit, other elements of protection sub-control box.Rated voltage is 500V, operating current 32A.
Described signal processing and modular converter DAQ have one road RS-485 bus interface, baud rate 9600, other has 8 road analog input interfaces, input voltage be 0V～+ 5V.Described signal processing and modular converter DAQ are according to the query statement signal, output current signal and the skin temperature signal that receive, the latter two are converted to the digital signal of using the ASCII coding from voltage signal, and send to described serial server COMS1 by connection.By means of this module, the user can send querying command to sub-control box by Ethernet, obtains the work at present state of sub-control box.
Described thermocouple TSR1, TSR2, TSR3 are mounted on the Switching Power Supply surface, are used to measure the skin temperature of three Switching Power Supplies, and range is-10 ℃-70 ℃, and output voltage is 0V-+5V.
Described DC current sensor CSR1, CSR2, CSR3 adopt the non-contact type direct current measuring signal, and output voltage signal, range are 0A-30A, output voltage be 0V～+ 5V.
Claims (8)
1. sub-control box that is used for large-scale radio telescope active surface control system, comprise: shell and be fixed in its inner three-phase external communication electrical interface successively, the external ethernet interface, outside direct current output interface, outside RS-485 bus interface, three groups of Switching Power Supplies, serial server, the single phase alternating current (A.C.) electromagnetic interface filter, direct current electromagnetic interface filter and DC power supply, it is characterized in that: the input of single phase alternating current (A.C.) electromagnetic interface filter is connected with three-phase external communication electrical interface, the output of single phase alternating current (A.C.) electromagnetic interface filter is in parallel with the input of three groups of Switching Power Supplies respectively, link to each other with the input of the input of direct current electromagnetic interface filter and DC power supply respectively after the output parallel connection of three groups of Switching Power Supplies and export the 50V direct current, the output of direct current electromagnetic interface filter links to each other with outside direct current output interface respectively, the output of DC power supply links to each other with serial server, the ethernet port of serial server links to each other with external ethernet interface and outside RS-485 bus interface respectively with bus end, the signal end of serial server is provided with signal processing and modular converter, and this signal processing links to each other with the signal end of serial server respectively with the input of modular converter and receives command signal from Ethernet.
2. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1 is characterized in that, is connected in series diode on the output of described three groups of Switching Power Supplies respectively with the Control current direction and prevent that electric current from pouring in down a chimney.
3. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1, it is characterized in that, be respectively equipped with DC current sensor that output and described signal processing link to each other with modular converter output current signal on the output of described three groups of Switching Power Supplies with the sense switch power supply.
4. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1, it is characterized in that, be respectively equipped with three groups of thermocouples that output and described signal processing link to each other with modular converter skin temperature signal on the shell of described three groups of Switching Power Supplies with the sense switch power supply.
5. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1, it is characterized in that, described signal processing and modular converter are according to the query statement signal, output current signal and the skin temperature signal that receive, the latter two are converted to the digital signal of using the ASCII coding from voltage signal, and send to described serial server by connection.
6. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1 is characterized in that, the input of described single phase alternating current (A.C.) electromagnetic interface filter is provided with respectively and described three groups of Surge Protectors that Switching Power Supply links to each other.
7. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 1, it is characterized in that, described shell comprises: casing and case lid, wherein: the junction of the upper edge of casing and the junction of case lid and case lid lower edge and casing is equipped with seal groove.
8. the sub-control box that is used for large-scale radio telescope active surface control system according to claim 7 is characterized in that, places conductive rubber or anti-aging rubber in the described seal groove; Corresponding casing is provided with the bulge-structure right with described rubber phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110071758 CN102110895B (en) | 2011-03-24 | 2011-03-24 | Sub-control box for active surface control system of large-scale radio telescope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110071758 CN102110895B (en) | 2011-03-24 | 2011-03-24 | Sub-control box for active surface control system of large-scale radio telescope |
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| CN102110895A true CN102110895A (en) | 2011-06-29 |
| CN102110895B CN102110895B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110071758 Active CN102110895B (en) | 2011-03-24 | 2011-03-24 | Sub-control box for active surface control system of large-scale radio telescope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037677A (en) * | 2017-11-30 | 2018-05-15 | 中国科学院国家天文台南京天文光学技术研究所 | The fault self-recovery semi-physical emulation platform that hides for South Pole astronomical telescope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070138971A1 (en) * | 2005-08-15 | 2007-06-21 | Liang Chen | AC-to-DC voltage converter as power supply for lamp |
| CN2922080Y (en) * | 2006-03-31 | 2007-07-11 | 江苏华鹏变压器有限公司 | Transformer oil tank double-sealing device |
| CN201422075Y (en) * | 2009-05-20 | 2010-03-10 | 天津市双源津瑞科技有限公司 | High-frequency switch power module |
| CN101720180A (en) * | 2008-10-09 | 2010-06-02 | 大连晨光电气控制有限公司 | Sealing structure for sealing box |
-
2011
- 2011-03-24 CN CN 201110071758 patent/CN102110895B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070138971A1 (en) * | 2005-08-15 | 2007-06-21 | Liang Chen | AC-to-DC voltage converter as power supply for lamp |
| CN2922080Y (en) * | 2006-03-31 | 2007-07-11 | 江苏华鹏变压器有限公司 | Transformer oil tank double-sealing device |
| CN101720180A (en) * | 2008-10-09 | 2010-06-02 | 大连晨光电气控制有限公司 | Sealing structure for sealing box |
| CN201422075Y (en) * | 2009-05-20 | 2010-03-10 | 天津市双源津瑞科技有限公司 | High-frequency switch power module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037677A (en) * | 2017-11-30 | 2018-05-15 | 中国科学院国家天文台南京天文光学技术研究所 | The fault self-recovery semi-physical emulation platform that hides for South Pole astronomical telescope |
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| CN102110895B (en) | 2013-08-21 |
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